There are quite a few options for welding plastic parts, including ultrasonics, laser, hot plate and radio frequency. Additionally, parts can be mechanically joined via fasteners, snap fits or adhesives. Each of these processes has certain advantages and disadvantages for production, and each requires vastly different part and joint designs.
Vibration welding uses heat generated by friction at the interface of two thermoplastic parts to produce melting in the interfacial area. The molten materials flow together under pressure and bond, forming a weld upon cooling.